METHOD AND DEVICE FOR FINGERPRINT RECOGNITION Russian patent published in 2019 - IPC G06K9/62 A61B5/1172 

FIELD: information technology.

SUBSTANCE: invention relates to fingerprint recognition. Technical result is achieved by the fact that the device includes a fingerprint sensor, at least two moisture detection electrodes and a data processing module, wherein the fingerprint sensor and at least two moisture determination electrodes are connected to the data processing module and at least two moisture detection electrodes are located within a predetermined distance from the fingerprint sensor; fingerprint sensor is configured to output a fingerprint signal to the data processing module when the user touches the fingerprint sensor finger and at least two moisture detection electrodes; data processing module is configured to obtain a characteristic value, wherein the characteristic value has a direct correlation with an impedance between at least two moisture determination electrodes; data processing module is also configured to determine a fingerprint recognition parameter which corresponds to a characteristic value, and to perform fingerprint recognition according to the detected fingerprint recognition parameter, as well as a fingerprint signal.

EFFECT: high efficiency and accuracy of fingerprint recognition.

10 cl, 7 dwg